Improvement in lamp-burners



J. S. HULL.

- Lamp Burner. No. 39,399. Patented Aug. 4,1863.

s UNITED STATES ATENT OFF CE.

JOHN s. HULL, or CINCINNATI, oniop IMPROVEMENT IN LAMP-BURNERS.

Specification forming part of Letters Patent No. 39,399, dated August 4, 1863.

To all whom it may concern: The use of this cone-partition O, in connec- Be it known that 1, JOHN S. HULL, of Oint tion with the small perforations a a, is not cinnati, and State of Ohio, have invented a only to engthen the passage of the draft to the N. new and usefullnu'irovementinCoal-Oil-Lamp burner, but, by gradually ei'ilarging and con- Burners; and I do hereby declare that the centrating the draft frbm different sides to following isa full and exact description thereequalize the motion and pressure on all sides, of, reference being had to the accompanying and finally to direct an even current all round drawings, making part of this specification. i up the middle of the burner. l find thatthis Figure l is a side view of a coal-oil-lamp 1 device makes a less sensitive light than many burner provided with my improvement; Fig. more complicated burners, and the draft, not 2, a central vertical section thereof. l being confined and hindered by too many tor- Like letters designate corresponding parts i tuous passages, is freer and more copious, and in both figures. produces a full and clear light.

The parts oi'the burner not herein especially To give an improved and still surer effect to described may be of any ordinary construethe equalizing power of this inside partition, I tion consistent with the improvement applied. notch or scallop its lower edge, as at cc, Fig.

Around the outer case, A, of the burner, 2, whereby the draft as it turnsinward around about midway ofits height, is an annular cup the partition is broken up into many small or concave ring, b, intended for the purpose of and equal currents, in a manner analogous to arresting the currents ofairdescendingaround the action of perforations.

a V the burner, and direct the air in larger and A burner provided with this improvement more. constant quantities into the burner requires only ashort chimney, as indicated in through small perforations aa in the case A, the drawings, to produce as large and brilliant just above this concave ring. a light as a large chimney will produce in s Inside of thecase A is introduced an annu ordinary lamps. Hence it is peculiarly suitalar partition, 0. Fig. 2, somewhat of an inble for portable lamps.

P ve'rted, cone-bell, or equivalent form, as rep- The construction of this burner is exceedresented,theupper broader edge fitting closely ingly simple and cheap.

inside of the burnercase A, just below the What I claim as my invention, and desire chimney, and the lower edge being of considto secuie by Letters Patent, i

erably less diameter, so as to leave a considl. The inner cone-partition, 0, arranged in erable space between it and the outer case. the inside of a lamp-burner, in combination The partition extends downward past the perwith the perforations a a of the outer case, forations a a of the case A, and more or less substantially as and for the purpose herein below them, but not down to the bottom of specified.

the burner, in order that a free space may be 2. The notches or scallops c c in the lower allowed for the draft-air to flow inward around edge of the partition 0, for the purpose des- JOHN S. HULL.

the lower edge of the partition, and thence ignated.

, upward in the middle of the burner. A transverse partition, d, some distance below the -Witnesses:

lower edge of the cone-partition C, may be J. S. BROWN, employed to cover the wick-wheels, &c. EDM. F. BROWN. 

